From nobody Fri Feb 13 09:34:23 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F52BE7F127 for ; Tue, 26 Sep 2023 20:38:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235890AbjIZUiM (ORCPT ); Tue, 26 Sep 2023 16:38:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230447AbjIZUiK (ORCPT ); Tue, 26 Sep 2023 16:38:10 -0400 Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a02:c205:3004:2154::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88533121; Tue, 26 Sep 2023 13:38:03 -0700 (PDT) Received: from p200300ccff2a5b001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:cc:ff2a:5b00:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qlEoX-004D56-R4; Tue, 26 Sep 2023 22:37:49 +0200 Received: from andi by aktux with local (Exim 4.96) (envelope-from ) id 1qlEoX-008tVK-0K; Tue, 26 Sep 2023 22:37:49 +0200 From: Andreas Kemnade To: jic23@kernel.org, lars@metafoo.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, bcousson@baylibre.com, tony@atomide.com, jean-baptiste.maneyrol@tdk.com, andreas@kemnade.info, chenhuiz@axis.com, andy.shevchenko@gmail.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH v2 1/3] dt-bindings: iio: imu: mpu6050: Add level shifter Date: Tue, 26 Sep 2023 22:37:37 +0200 Message-Id: <20230926203739.2119963-2-andreas@kemnade.info> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230926203739.2119963-1-andreas@kemnade.info> References: <20230926203739.2119963-1-andreas@kemnade.info> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a level shifter flag as found in ancient platform data struct: level_shifter: 0: VLogic, 1: VDD Signed-off-by: Andreas Kemnade --- .../devicetree/bindings/iio/imu/invensense,mpu6050.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.y= aml b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml index 1db6952ddca5e..297b8a1a7ffbc 100644 --- a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml +++ b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml @@ -48,6 +48,11 @@ properties: =20 mount-matrix: true =20 + invensense,level-shifter: + type: boolean + description: | + From ancient platform data struct: false: VLogic, true: VDD + i2c-gate: $ref: /schemas/i2c/i2c-controller.yaml unevaluatedProperties: false --=20 2.39.2 From nobody Fri Feb 13 09:34:23 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5071E7F129 for ; Tue, 26 Sep 2023 20:38:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235905AbjIZUiQ (ORCPT ); Tue, 26 Sep 2023 16:38:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235879AbjIZUiL (ORCPT ); Tue, 26 Sep 2023 16:38:11 -0400 Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a02:c205:3004:2154::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83D1412A; Tue, 26 Sep 2023 13:38:04 -0700 (PDT) Received: from p200300ccff2a5b001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:cc:ff2a:5b00:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qlEoY-004D58-9q; Tue, 26 Sep 2023 22:37:49 +0200 Received: from andi by aktux with local (Exim 4.96) (envelope-from ) id 1qlEoX-008tVQ-1u; Tue, 26 Sep 2023 22:37:49 +0200 From: Andreas Kemnade To: jic23@kernel.org, lars@metafoo.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, bcousson@baylibre.com, tony@atomide.com, jean-baptiste.maneyrol@tdk.com, andreas@kemnade.info, chenhuiz@axis.com, andy.shevchenko@gmail.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH v2 2/3] iio: imu: mpu6050: add level shifter flag Date: Tue, 26 Sep 2023 22:37:38 +0200 Message-Id: <20230926203739.2119963-3-andreas@kemnade.info> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230926203739.2119963-1-andreas@kemnade.info> References: <20230926203739.2119963-1-andreas@kemnade.info> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Some boards fail in magnetometer probe if level shifter flag is not set, definition was found in a 3.0 vendor kernel. Signed-off-by: Andreas Kemnade Reviewed-by: Andy Shevchenko --- drivers/iio/imu/inv_mpu6050/inv_mpu_aux.c | 10 ++++++++++ drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 3 +++ drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 1 + 3 files changed, 14 insertions(+) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_aux.c b/drivers/iio/imu/in= v_mpu6050/inv_mpu_aux.c index 7327e5723f961..1d30360f1d482 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_aux.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_aux.c @@ -71,6 +71,16 @@ int inv_mpu_aux_init(const struct inv_mpu6050_state *st) unsigned int val; int ret; =20 + /* code based on a 3.0 vendor kernel, the exact meaning is unknown */ + if (st->chip_type =3D=3D INV_MPU9150) { + unsigned int mask =3D BIT(7); + + val =3D st->level_shifter ? mask : 0; + ret =3D regmap_update_bits(st->map, 0x1, mask, val); + if (ret) + return ret; + } + /* configure i2c master */ val =3D INV_MPU6050_BITS_I2C_MST_CLK_400KHZ | INV_MPU6050_BIT_WAIT_FOR_ES; diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/i= nv_mpu6050/inv_mpu_core.c index 29f906c884bd8..3fbeef1a70186 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -17,6 +17,7 @@ #include #include #include +#include =20 #include #include @@ -1495,6 +1496,8 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq= , const char *name, st->irq =3D irq; st->map =3D regmap; =20 + st->level_shifter =3D device_property_read_bool(dev, + "invensense,level-shifter"); pdata =3D dev_get_platdata(dev); if (!pdata) { result =3D iio_read_mount_matrix(dev, &st->orientation); diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/in= v_mpu6050/inv_mpu_iio.h index ed5a96e78df05..7eba1439c8093 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h @@ -203,6 +203,7 @@ struct inv_mpu6050_state { s32 magn_raw_to_gauss[3]; struct iio_mount_matrix magn_orient; unsigned int suspended_sensors; + bool level_shifter; u8 *data; }; =20 --=20 2.39.2 From nobody Fri Feb 13 09:34:23 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09ACFE7F124 for ; Tue, 26 Sep 2023 20:38:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235895AbjIZUiO (ORCPT ); Tue, 26 Sep 2023 16:38:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49136 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235870AbjIZUiK (ORCPT ); Tue, 26 Sep 2023 16:38:10 -0400 Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a02:c205:3004:2154::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B5E1126; Tue, 26 Sep 2023 13:38:04 -0700 (PDT) Received: from p200300ccff2a5b001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:cc:ff2a:5b00:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qlEoY-004D5A-SA; Tue, 26 Sep 2023 22:37:50 +0200 Received: from andi by aktux with local (Exim 4.96) (envelope-from ) id 1qlEoY-008tVV-0Z; Tue, 26 Sep 2023 22:37:50 +0200 From: Andreas Kemnade To: jic23@kernel.org, lars@metafoo.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, bcousson@baylibre.com, tony@atomide.com, jean-baptiste.maneyrol@tdk.com, andreas@kemnade.info, chenhuiz@axis.com, andy.shevchenko@gmail.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH v2 3/3] ARM: dts: omap: omap4-embt2ws: Add IMU at control unit Date: Tue, 26 Sep 2023 22:37:39 +0200 Message-Id: <20230926203739.2119963-4-andreas@kemnade.info> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230926203739.2119963-1-andreas@kemnade.info> References: <20230926203739.2119963-1-andreas@kemnade.info> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add also the level-shifter flag to avoid probe failure in magnetometer probe. Signed-off-by: Andreas Kemnade --- .../boot/dts/ti/omap/omap4-epson-embt2ws.dts | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts b/arch/arm/b= oot/dts/ti/omap/omap4-epson-embt2ws.dts index cd4f858d846ab..0cc66e158a8d5 100644 --- a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts +++ b/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts @@ -391,7 +391,16 @@ tlv320aic3x: codec@18 { reset-gpios =3D <&gpio2 23 GPIO_ACTIVE_LOW>; }; =20 - /* TODO: mpu9150 at control unit, seems to require quirks */ + mpu9150: imu@68 { + compatible =3D "invensense,mpu9150"; + reg =3D <0x68>; + + pinctrl-names =3D "default"; + pinctrl-0 =3D <&mpu9150_pins>; + interrupt-parent =3D <&gpio2>; + interrupt =3D <7 IRQ_TYPE_LEVEL_HIGH>; + invensense,level-shifter; + }; }; =20 &keypad { @@ -530,6 +539,12 @@ OMAP4_IOPAD(0x0fc, PIN_INPUT | MUX_MODE0) /* abe= _mcbsp2_fsx */ >; }; =20 + mpu9150_pins: pinmux_mpu9150-pins { + pinctrl-single,pins =3D < + OMAP4_IOPAD(0x5e, PIN_INPUT_PULLUP | MUX_MODE3) + >; + }; + mpu9150h_pins: pinmux-mpu9150h-pins { pinctrl-single,pins =3D < OMAP4_IOPAD(0x76, PIN_INPUT_PULLUP | MUX_MODE3) --=20 2.39.2